Rockdale scored 100 points to win the New Manchester Invitational out of 15 teams March 22.
Alexander was second with a score of 89.5, ahead of third-place Stephens with 85 in boys' events.
Three Bulldogs finished first in their events, along with Rockdale's 800 sprint medley relay team.
Lawrence Crawford finished first in the 100-meter dash in a time of 10.91. Jhibri Greer won the 110-meter hurdles in a time of 14.92. Tyree Newton won the 3,200-meter run for Rockdale in a time of 10:17.89.
The Bulldogs' relay team of Isaah McClinton, Crawford, Mario Smith and Alonzo Allen won in atime of 1:37.18.